package main


import (
    "fmt"
)

func grade(score int) string {
    g := ""
    switch {
    case score < 60:
        g = "F"
    case score < 100:
        g = "T"
    default:
        panic(fmt.Sprintf("Wrong : %d ", score))
    }

    return g
}

func main(){
    fmt.Print(grade(10))
    fmt.Print(grade(100))
    fmt.Print(grade(111))
}

